北京白癜风医院哪个比较好 http://baidianfeng.39.net/a_yufang/160314/4786591.html 四川某客户在长宁使用三棱齿打穿嘉陵江至韩家店完钻Tripleridgedcutterandaxe-shapedcutterdrilledJialingjiangRiverFormationtoHanjiadianFormationinSichuanProvince近日开始，某四川钻头客户用公司三棱齿和二棱齿混布的两个12寸2的5刀翼（3长2短），在四川长宁区块的九丝镇附近，从嘉陵江打到韩家店完钻。FromJune9th,,onePDCBitcustomerfromSichuanProvincemade2piecesof12.2"-5-blade(3longand2short)mountedwithourtripleridgedcutterandalsoaxe-shapedcutterof(Note:therestcuttersonthebackuprowandcuttersforgaugeprotectionetcARENOTOURS)anddrilledin"Changning"(nearJiusiTown,YibinCity).Thetwopiecesof12.2"-5-bladePDCbitsdrilledthroughtheJialingjiangRiverFormationtotheHanjiadianFormationandwaspulledaftertotaldepth. 个钻头从二开的米入井，先后穿过嘉陵江组，飞仙关组，长兴组，龙潭组，进茅口组米，其中茅二a是27米，钻至米由于井漏出井，进尺米，钻时75小时，机速14.15，钻头磨损较少，新度较好。Thefirstdrillbitbegantodrill(Depthin)frommeteranddrilledthroughtheJialingjiangRiverFormation,FeixianguanFormation,ChangxingFormation,LongtanFormationandthedrilledintotheMaokouFormationwithafootageofmeters(ThefootageofMaokouFormationⅡis27meters).Thedrillbitwaspulledoutbecauseofmudlossesatthedepthofmeter.Thetotalfootagewasmetersanddrilledfor75hoursinall.TheROPwas14.5m/hr.Thedullgradeofthedrillbitwasslightandwasstillalmostintactwhenpulledout.Depthin(m)Depthout(m)Totalfootage(m)Drillhours(hr)ROPDullcondition7.15LightdullandsomeBTThisdrillbitbegantodrill(Depthin)frommeteranddrilledthroughtheJialingjiangRiverFormation,FeixianguanFormation,ChangxingFormation,LongtanFormationandthedrilledintotheMaokouFormationwithafootageofmeters(ThefootageofMaokouFormationⅡis27meters).Thedrillbitwaspulledoutbecauseofmudlossesatthedepthofmeter以下是 个钻头出井照片Thefollowingaretheon-sitepictureswhenthedrillbitwaspulledout:
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